Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Br-O-P-Pb”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on P3Pb5BrO12 by Materials Project

Pb5(PO4)3Br crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to six O2- and two equivalent Br1- atoms. There are a spread of Pb–O bond distances ranging from 2.41–3.17 Å. Both Pb–Br bond lengths are 3.22 Å. In the second Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.66–2.92 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent BrPb6O6 cuboctahedra. There are a spread of P–O bond distances ranging from 1.55–1.58 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+, one P5+, and one Br1- atom. The O–Br bond length is 3.39 Å. Br1- is bonded to six equivalent Pb2+ and six equivalent O2- atoms to form distorted BrPb6O6 cuboctahedra that share corners with six equivalent PO4 tetrahedra and faces with two equivalent BrPb6O6 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P3Pb5BrO12 by Materials Project

Pb5(PO4)3Br crystallizes in the hexagonal P6_3 space group. The structure is three-dimensional. there are three inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to six O2- and two equivalent Br1- atoms. There are a spread of Pb–O bond distances ranging from 2.39–3.18 Å. There are one shorter (3.18 Å) and one longer (3.26 Å) Pb–Br bond lengths. In the second Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.66–2.91 Å. In the third Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.66–2.91 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent BrPb6O6 cuboctahedra. There are a spread of P–O bond distances ranging from 1.55–1.58 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+, one P5+, and one Br1- atom. The O–Br bond length is 3.40 Å. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+, one P5+, and one Br1- atom. The O–Br bond length is 3.38 Å. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. Br1- is bonded to six equivalent Pb2+ and six O2- atoms to form distorted BrPb6O6 cuboctahedra that share corners with six equivalent PO4 tetrahedra and faces with two equivalent BrPb6O6 cuboctahedra.

36 MATERIALS SCIENCE↗